121740880 has 40 divisors (see below), whose sum is σ = 283747464. Its totient is φ = 48576000.

The previous prime is 121740877. The next prime is 121740911. The reversal of 121740880 is 88047121.

It can be written as a sum of positive squares in 4 ways, for example, as 652864 + 121088016 = 808^2 + 11004^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35230 + ... + 38530.

Almost surely, 2^121740880 is an apocalyptic number.

121740880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121740880 is an abundant number, since it is smaller than the sum of its proper divisors (162006584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121740880 is a wasteful number, since it uses less digits than its factorization.

121740880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3775 (or 3769 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 121740880 is about 11033.6249709694. The cubic root of 121740880 is about 495.6161832990.

The spelling of 121740880 in words is "one hundred twenty-one million, seven hundred forty thousand, eight hundred eighty".